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ArchibaldBarashol
06-15-2009, 05:32 PM
Hi, guys.

I'm working on dropdown menus and like the semi-transparent style that you see on a lot of corporate websites (Ford (www.ford.com) or Johnson & Johnson (www.jnj.com), for examples).

Is there a standard filter code that I can work into my styling to make that happen-- or is it a complex coding issue?

Thanks!
Arch

vwphillips
06-16-2009, 11:11 AM
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
<title></title>
<style type="text/css">
/*<![CDATA[*/
#tst {
position:absolute;left:50px;top:50px;width:400px;height:60px;
}

.item {
position:relative;z-Index:2;left:0px;top:20px;width:60px;height:20px;
float:left;margin-Left:10px;background-Color:#FFCC66;
}

.mask {
position:absolute;left:0px;top:0px;width:400px;height:60px;background-Color:#FF0000;
}

.sub {
position:absolute;overflow:hidden;left:0px;top:20px;width:80px;height:100px;background-Color:#FFFFCC;
}

/*]]>*/
</style>

<script type="text/javascript">
/*<![CDATA[*/
// Basic Element Animator (14-May-2009)
// by Vic Phillips http://www.vicsjavascripts.org.uk

// To progressively change the Left, Top, Width, Height or Opacity of an element over a specified period of time.
// With the ability to scale the effect time on specified minimum/maximum values
// and with three types of progression 'sin' and 'cos' and liner and an optional 'Bounce'.

// **** Application Notes

// **** The HTML Code
//
// when moving an element the inline or class rule style position of the element should be assigned as
// 'position:relative;' or 'position:absolute;'.
//
// The element would normally be assigned a unique ID name.
//

// **** Executing the Effect(Script)
//
// The effect is executed by an event call to function 'zxcBAnimator('width#',document.getElementById('tst'),10,800,5000,[10,800],'sin');'
// where:
// parameter 0 = the mode(see Note 2). (string)
// parameter 1 = the unique ID name or element object. (string or element object)
// parameter 2 = the start position of the effect. (digits, for opacity minimum 0, maximum 100)
// parameter 3 = the finish position of the effect. (digits, for opacity minimum 0, maximum 100)
// parameter 4 = (optional) period of time between the start and finish of the effect in milliseconds. (digits or defaults to 2000 milliSeconds)
// parameter 5 = (optional) to scale the effect time on a specified minimum/maximum. (array, see Note 5)
// field 0 the minimum. (digits)
// field 1 the maximum. (digits)
// parameter 6 = (optional) the type of progression, 'sin', 'cos' or 'liner'. (string, default = 'liner')
// 'sin' progression starts fast and ends slow.
// 'cos' progression starts slow and ends fast.
//
// Note 1: The default units(excepting opacity) are 'px'.
// Note 2: Examples modes: 'left', 'top', 'width', 'height', 'opacity.
// For hyphenated modes, the first character after the hyphen must be upper case, all others lower case.
// Note 3: To 'toggle' the effect include '#' in parameter 0.
// The first call will set the toggle parameters.
// Subsequent calls with '#' in parameter 0 and the same start and finish parameters will 'toggle' the effect.
// Note 4: The function may be re-executed with a different set of parameters (start/finish time or period)
// whenever required, say from an onclick/mouseover/out event.
// The period parameter will be retained unless re-specified.
// Note 5: parameter 5 is of particular use when re-calling the effect
// in mid travel to retain an constant rate of progression.
// Note 6: parameters 2 and 3 must be different values to execute the script.
//


// **** Functional Code - NO NEED to Change


function zxcBAnimator(mde,obj,srt,fin,ms,scale,curve){
if (typeof(obj)=='string'){ obj=document.getElementById(obj); }
if (!obj) return;
var oop=obj[mde.replace(/\W/g,'')+'oop'];
if (oop){
if (oop.srtfin[0]==srt&&oop.srtfin[1]==fin&&mde.match('#')) oop.update([oop.data[0],(oop.srtfin[0]==oop.data[2])?fin:srt],ms,scale,curve);
else oop.update([srt,fin],ms,scale,curve);
}
else oop=obj[mde.replace(/\W/g,'')+'oop']=new zxcBAnimatorOOP(mde,obj,srt,fin,ms,scale,curve);
return oop;
}

function zxcBAnimatorOOP(mde,obj,srt,fin,ms,scale,curve){
this.srtfin=[srt,fin];
this.to=null;
this.obj=obj;
this.mde=mde.replace(/\W/g,'');
this.update([srt,fin],ms,scale,curve);
}

zxcBAnimatorOOP.prototype.update=function(srtfin,ms,scale,curve){
clearTimeout(this.to);
this.time=ms||this.time||2000;
this.data=[srtfin[0],srtfin[0],srtfin[1]];
this.mS=this.time*(!scale?1:Math.abs((srtfin[1]-srtfin[0])/(scale[1]-scale[0])));
this.ms=this.mS;
this.curve=(typeof(curve)=='string')?curve.charAt(0).toLowerCase():(this.curve)?this.curve:'x';
this.inc=Math.PI/(2*this.mS);
this.srttime=new Date().getTime();
this.cng();
}

zxcBAnimatorOOP.prototype.cng=function(){
this.ms=new Date().getTime()-this.srttime;
this.data[0]=(this.curve=='s')?Math.floor((this.data[2]-this.data[1])*Math.sin(this.inc*this.ms)+this.data[1]):(this.curve=='c')?(this.data[2])-Math.floor((this.data[2]-this.data[1])*Math.cos(this.inc*this.ms)):(this.data[2]-this.data[1])/this.mS*this.ms+this.data[1];
this.apply();
if (this.ms<this.mS) this.to=setTimeout(function(oop){return function(){oop.cng();}}(this),10);
else {
this.data[0]=this.data[2];
this.apply();
if (this.Bounce&&this.Bounce[2]>0) this.bounce();
}
}

zxcBAnimatorOOP.prototype.apply=function(){
if (isFinite(this.data[0])){
if (this.mde!='left'&&this.mde!='top'&&this.data[0]<0) this.data[0]=0;
if (this.mde!='opacity') this.obj.style[this.mde]=this.data[0]+'px';
else zxcOpacity(this.obj,this.data[0]);
}
}

zxcBAnimatorOOP.prototype.bounce=function(){
if (this.Bounce[2]%2==0)
this.Bounce[1]+=(this.Bounce[0]-this.Bounce[1])/(this.Bounce[2])
this.update([this.data[0],this.Bounce[this.Bounce[2]%2==0?1:0]],this.Bounce[3]/this.Bounce[2]);
this.Bounce[2]--;
}

function zxcOpacity(obj,opc){
if (opc<0||opc>100) return;
obj.style.filter='alpha(opacity='+opc+')';
obj.style.opacity=obj.style.MozOpacity=obj.style.KhtmlOpacity=opc/100-.001;
}

/*]]>*/
</script>

<script type="text/javascript">
/*<![CDATA[*/

function zxcMenu(id,mcls,icls,scls,ms){
this.obj=document.getElementById(id);
this.ary=[];
var items=zxcByClassName(icls,this.obj,'DIV'),msk=zxcByClassName(mcls,this.obj,'DIV')[0],h=msk.offsetHeight;
for (var sub,z0=0;z0<items.length;z0++){
sub=zxcByClassName(scls,items[z0],'DIV')[0];
this.ary[z0]=[items[z0],sub?sub.offsetHeight:false,sub?zxcBAnimator('height',sub,1,0,10):false,sub?zxcBAnimator('opacity',sub,51,50,10):false];
this.addevt(items[z0],'mouseover','Expand',z0);
this.addevt(items[z0],'mouseout','Expand',z0);
if (sub) sub.style.height='0px';
}
this.msk=[msk.offsetHeight,zxcBAnimator('height',msk,h+1,h,10),zxcBAnimator('opacity',msk,51,50,10)];
this.ms=ms||1000;
this.lst=false;
}

zxcMenu.prototype.Expand=function(ev,nu){
if (ev.type=='mouseover'){
if (this.lst) this.animate(this.lst-1,false);
if (this.ary[nu][2]){
this.lst=nu+1;
this.animate(nu,true,this.ms);
}
}
else if (this.lst&&zxcCkEventObj(ev,this.ary[nu][0])) this.animate(this.lst-1,false,this.ms/2);
}

zxcMenu.prototype.animate=function(nu,ud,ms){
this.ary[nu][2].update([this.ary[nu][2].data[0],ud?this.ary[nu][1]:0],ms);
this.ary[nu][3].update([this.ary[nu][3].data[0],ud?100:0],ms);
this.msk[1].update([this.msk[1].data[0],this.msk[0]+(ud?this.ary[nu][1]:0)],ms);
}

zxcMenu.prototype.addevt=function(o,t,f,p){
var oop=this;
if (o.addEventListener) o.addEventListener(t,function(e){ return oop[f](e,p);}, false);
else if (o.attachEvent) o.attachEvent('on'+t,function(e){ return oop[f](e,p); });
else {
var prev=o['on'+t];
if (prev) o['on'+t]=function(e){ prev(e); oop[f](e,p); };
else o['on'+t]=o[f];
}
}

function zxcByClassName(nme,el,tag){
if (typeof(el)=='string') el=document.getElementById(el);
el=el||document;
for (var tag=tag||'*',reg=new RegExp('\\b'+nme+'\\b'),els=el.getElementsByTagName(tag),ary=[],z0=0; z0<els.length;z0++){
if(reg.test(els[z0].className)) ary.push(els[z0]);
}
return ary;
}

function zxcCkEventObj(e,p){
if (!e) var e=window.event;
e.cancelBubble=true;
if (e.stopPropagation) e.stopPropagation();
if (e.target) eobj=e.target;
else if (e.srcElement) eobj=e.srcElement;
if (eobj.nodeType==3) eobj=eobj.parentNode;
var eobj=(e.relatedTarget)?e.relatedTarget:(e.type=='mouseout')?e.toElement:e.fromElement;
if (!eobj||eobj==p) return false;
while (eobj.parentNode){
if (eobj==p) return false;
eobj=eobj.parentNode;
}
return true;
}

/*]]>*/
</script>


</head>

<body onload="M=new zxcMenu('tst','mask','item','sub',1000);">
<div id="tst" >
<div class="mask" ></div>
<div class="item" >Item 0</div>
<div class="item" >Item 1
<div class="sub" >Sub1</div>
</div>
<div class="item" >Item 2
<div class="sub" style="height:200px;" >Sub2</div>
</div>
</div>
</form>

</body>

</html>